Welcome to Rabbit Hole
Rabbit Hole is a 3D casual runner where you dig endlessly deeper down the burrow alongside an adventurous rabbit.
You can play it right in your browser — no install, no sign-up.
What kind of game it is
The protagonist is Mocha, an adventurer rabbit.
Mocha doesn't run along a floor — she can run anywhere around the tunnel's circumference, circling the wall to get around obstacles.
The rules are simple.
Collect carrots for points, dodge rocks and roots, and see how deep you can go before your three hearts run out.
Speed builds as you descend, so the same burrow is a completely different game early on than it is deep down.
There are only three controls: left, right, and jump.
On a keyboard that's the arrow keys (or A/D) plus space; on mobile, press and hold either half of the screen to move, and tap to jump.
What you'll be doing
- Combos — chain carrots within 2 seconds and the score multiplier climbs to ×5
- Today's Burrow — the same layout opens for everyone each day, so you compete on identical terrain
- Three burrows — Dirt, Crystal Cave, and Moonlit. Not just colors: pace and gravity differ
- Cosmetics and upgrades — spend coins on fur colors and accessories, or permanently boost your abilities
What's on this blog
I record the making of the game: sculpting a rabbit in code without any 3D models, building game feel without a physics engine, and all the trial and error along the way.
It falls into three tracks.
The rebuild story — diagnosing why the old version wasn't a game, and rebuilding it against fresh criteria. Diagnosing the old version · Redesign direction · Before / After
How it's built — technical write-ups with the actual code and numbers. Sculpting a rabbit in code · Procedural animation · Toon shading · Arcade movement and jumping · Collisions and tunneling · An endless curved tunnel · Fixing frame drops · A serverless leaderboard
Strategy — how to score higher and get deeper. The mechanics of high scores · Keeping a combo · Survival by section · Trampolines and the pocket watch · Today's Burrow · Coins and cosmetics
This game is a side project I build on my own.
If something comes to mind while you play, or you spot a bug, sending it through Contact genuinely helps.